How is the voltage to ground measured in grounded circuits?

The measurement of voltage to ground in grounded circuits is specifically determined by assessing the potential difference between a given conductor and a grounded point. This approach focuses on the reference point of ground, which is crucial for establishing safe operating conditions and for ensuring that the system is functioning correctly.

In a grounded circuit, the ground serves as a common return path and reference point for electrical systems, making it essential to understand how voltage levels relate to this reference. By measuring the voltage from a specific conductor to ground, you can effectively determine the electrical potential available to that conductor in relation to the earth's reference point, which is vital for safety and proper system operation.

Other choices involve comparisons that do not define the relationship to ground accurately. For instance, measuring between ungrounded conductors or between two grounded conductors lacks the necessary reference to ground for clear evaluation, while measuring between a grounded conductor and the neutral does not provide the specific context of grounding in relation to the overall system. Thus, focusing on the given conductor's voltage in relation to the grounded point is the appropriate method.